I've found that most forums have their political rooms that otherwise courteous, mature members use to behave like two-year olds, and check all their decency at the link. Now I have carefully chosen the forums I subscribe to and participate in, and totally avoid the political rooms. Ironically, the two political forums I belong to (dedicated political forums) the people seem to behave much better. Maybe they're the political "pros" who better understand the need for civility, when knowingly discussing hot topics in the first place? When in a sailing forum, I stick to sailing.

Let me join the chorus of those asking you to reconsider your exit. Maybe just curtail certain rooms?